#include <iostream>
using namespace std;
int fibonacci(int i){
    if (i <= 1){
        return i;
    }
    else{
        return fibonacci(i-1)+fibonacci(i-2);
    }
}
int main(){
    int a;
    int b[40]={};
    cin>>a;
    a++;
    for(int i=1;i<=a;i++){
        b[i]=fibonacci(i);
    }
    for(int i=2;i<=a;i++){
        cout<<b[i-1]<<" / "<<b[i]<<": "<<((long double)b[i-1])/((long double)b[i])<<endl;
    }



}
